National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Hazardous Weather Conditions

Current conditions at

Farmington Airport (KFAM)

Lat: 37.77°NLon: 90.43°WElev: 945ft.

Fair

74°F

23°C

Humidity 94%
Wind Speed Calm
Barometer 30.26 in (1024.7 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 16 Sep 11:56 pm CDT
Extended Forecast for

3 Miles SW Potosi MO

Heat Advisory September 17, 12:22am until September 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 17, 12:22am until September 19, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Overnight

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 97. Heat index values as high as 106. South wind 5 to 7 mph becoming west in the afternoon.

    High: 97 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73. Light and variable wind.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 96. Heat index values as high as 103. West wind around 5 mph becoming calm in the morning.

    High: 96 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 71. Light and variable wind.

    Low: 71 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers. Mostly sunny, with a high near 94.

    High: 94 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 73. Light south wind.
Thursday
Sunny and hot, with a high near 97. Heat index values as high as 106. South wind 5 to 7 mph becoming west in the afternoon.
Thursday Night
Mostly clear, with a low around 73. Light and variable wind.
Friday
Sunny, with a high near 96. Heat index values as high as 103. West wind around 5 mph becoming calm in the morning.
Friday Night
Mostly clear, with a low around 71. Light and variable wind.
Saturday
Sunny, with a high near 96.
Saturday Night
Partly cloudy, with a low around 71.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 94.
Sunday Night
Partly cloudy, with a low around 68.
Monday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88.
Monday Night
A 30 percent chance of showers. Partly cloudy, with a low around 64.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 82.
Tuesday Night
Partly cloudy, with a low around 61.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Potosi MO
 37.9°N 90.83°W (Elev. 1001 ft)
Last Update:
10:46 pm CDT Sep 16, 2026
Forecast Valid:
12am CDT Sep 17, 2026-6pm CDT Sep 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation